Safari,javascript:等待打印确认窗口

我也遇到过同样的问题,我的调查显示 onfocus (或 电子稳定控制系统 按钮)关闭确认对话框。 聚焦事件

function safariPrint() {
  // Safari 12, macOS
  if (!window.onafterprint) {
    const onAfterPrint = mql => {
      if (!mql.matches) {
        showStuff();

        // printing is finished => unsubscribe to avoid leaks
        if (mediaQueryList.removeEventListener) {
          mediaQueryList.removeEventListener('change', onAfterPrint);
        } else {
          mediaQueryList.removeListener(onAfterPrint);
        }
      }
      window.onfocus = null;
    };

    // a tiny polyfill for a plain onafterprint
    // to handle standard window.print() dialog events
    const mediaQueryList = window.matchMedia('print');
    if (mediaQueryList.addEventListener) {
      mediaQueryList.addEventListener('change', onAfterPrint);
    } else {
      mediaQueryList.addListener(onAfterPrint);
    }

    // if a user cancels printing in Safari's print confirmation dialog
    // then we will trigger a cleanup
    window.focus();
    window.onfocus = () => {
      onAfterPrint(mediaQueryList);
    };
  }

  hideStuff();    
  window.print();
}